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   <div id="projectname">CMSIS-RTOS
   &#160;<span id="projectnumber">Version 1.03</span>
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   <div id="projectbrief">Real-Time Operating System: API and RTX Reference Implementation.</div>
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<div class="title">Using a CMSIS-RTOS Implementation </div>  </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><p>A CMSIS-RTOS implementation is typically provided as a library. To add the RTOS functionality to an existing CMSIS-based application, the RTOS library (and typically a configuration file) needs to be added. The available functionality of the RTOS library is defined in the header file <b><a class="el" href="cmsis__os_8h.html">cmsis_os.h</a></b> that is specific for each CMSIS-RTOS implementation.</p>
<div class="image">
<img src="CMSIS_RTOS_Files.png" alt="CMSIS_RTOS_Files.png"/>
<div class="caption">
CMSIS-RTOS File Structure</div></div>
<p> Depending on the CMSIS-RTOS implementation, execution may start with the <b>main</b> function as the first thread. This has the benefit that an application programmer may use other middleware libraries that create threads internally, but the remaining part of the user application just uses the <b>main</b> thread. Therefore, the usage of the RTOS can be invisible to the application programmer, but libraries can use CMSIS-RTOS features.</p>
<p>Once the files are added to a project, the user can start working with the CMSIS-RTOS functions. A code example is provided below:</p>
<p><b>Code Example</b> </p>
<div class="fragment"><div class="line"><span class="preprocessor">#include &quot;<a class="code" href="cmsis__os_8h.html">cmsis_os.h</a>&quot;</span>                            <span class="comment">// CMSIS-RTOS header file</span></div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> job1 (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument)  {              <span class="comment">// thread function &#39;job1&#39;</span></div>
<div class="line">  <span class="keywordflow">while</span> (1)  {</div>
<div class="line">      :                                          <span class="comment">// execute some code</span></div>
<div class="line">    <a class="code" href="group__CMSIS__RTOS__Wait.html#ga02e19d5e723bfb06ba9324d625162255">osDelay</a> (10);                                <span class="comment">// delay execution for 10 milliseconds</span></div>
<div class="line">  }</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gaee93d929beb350f16e5cc7fa602e229f">osThreadDef</a>(job1, <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa17b36cd9cd38652c2bc6d4803990674b">osPriorityAboveNormal</a>, 1, 0);  <span class="comment">// define job1 as thread function</span></div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> job2 (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument)  {              <span class="comment">// thread function &#39;job2&#39;</span></div>
<div class="line">  <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gac59b5713cb083702dce759c73fd90dff">osThreadCreate</a>(<a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gaf0c7c6b5e09f8be198312144b5c9e453">osThread</a>(job1),NULL);           <span class="comment">// create job1 thread</span></div>
<div class="line">  <span class="keywordflow">while</span> (1)   {</div>
<div class="line">    :                                            <span class="comment">// execute some code</span></div>
<div class="line">  }</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gaee93d929beb350f16e5cc7fa602e229f">osThreadDef</a>(job2, <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa45a2895ad30c79fb97de18cac7cc19f1">osPriorityNormal</a>, 1, 0);       <span class="comment">// define job2 as thread function</span></div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> job3 (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument)  {              <span class="comment">// thread function &#39;job3&#39;</span></div>
<div class="line">  <span class="keywordflow">while</span> (1)   {</div>
<div class="line">      :                                          <span class="comment">// execute some code</span></div>
<div class="line">    <a class="code" href="group__CMSIS__RTOS__Wait.html#ga02e19d5e723bfb06ba9324d625162255">osDelay</a> (20);                                <span class="comment">// delay execution for 20 milliseconds</span></div>
<div class="line">  }</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gaee93d929beb350f16e5cc7fa602e229f">osThreadDef</a>(job3, <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa45a2895ad30c79fb97de18cac7cc19f1">osPriorityNormal</a>, 1, 0);       <span class="comment">// define job3 as thread function</span></div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> main (<span class="keywordtype">void</span>) {                                <span class="comment">// program execution starts here</span></div>
<div class="line">  <a class="code" href="group__CMSIS__RTOS__KernelCtrl.html#ga53d078a801022e202e8115c083ece68e">osKernelInitialize</a> ();                         <span class="comment">// initialize RTOS kernel</span></div>
<div class="line">    :                                            <span class="comment">// setup and initialize peripherals</span></div>
<div class="line">  <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gac59b5713cb083702dce759c73fd90dff">osThreadCreate</a> (<a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gaf0c7c6b5e09f8be198312144b5c9e453">osThread</a>(job2));</div>
<div class="line">  <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gac59b5713cb083702dce759c73fd90dff">osThreadCreate</a> (<a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gaf0c7c6b5e09f8be198312144b5c9e453">osThread</a>(job3));</div>
<div class="line">  <a class="code" href="group__CMSIS__RTOS__KernelCtrl.html#gaab668ffd2ea76bb0a77ab0ab385eaef2">osKernelStart</a> ();                              <span class="comment">// start kernel with job2 execution</span></div>
<div class="line">}</div>
</div><!-- fragment --><h1><a class="anchor" id="cmsis_os_h"></a>
Header File Template: cmsis_os.h</h1>
<p>The file <b><a class="el" href="cmsis__os_8h.html">cmsis_os.h</a></b> is a template header file for a CMSIS-RTOS compliant Real-Time Operating System (RTOS). Each RTOS that is compliant with CMSIS-RTOS shall provide a specific <b><a class="el" href="cmsis__os_8h.html">cmsis_os.h</a></b> header file that represents its implementation.</p>
<p>The file <a class="el" href="cmsis__os_8h.html">cmsis_os.h</a> contains:</p>
<ul>
<li>CMSIS-RTOS API function definitions</li>
<li>struct definitions for parameters and return types</li>
<li>status and priority values used by CMSIS-RTOS API functions</li>
<li>macros for defining threads and other kernel objects</li>
</ul>
<p><b>Name conventions and header file modifications</b></p>
<p>All definitions are prefixed with <b>os</b> to give an unique name space for CMSIS-RTOS functions. Definitions that are prefixed <b>os_</b> are not used in the application code but local to this header file. All definitions and functions that belong to a module are grouped and have a common prefix, i.e. <b>osThread</b>.</p>
<p>Definitions that are marked with <b>CAN BE CHANGED</b> can be adapted towards the needs of the actual CMSIS-RTOS implementation. These definitions can be specific to the underlying RTOS kernel.</p>
<p>Definitions that are marked with <b>MUST REMAIN UNCHANGED</b> cannot be altered. Otherwise the CMSIS-RTOS implementation is no longer compliant to the standard. Note that some functions are optional and need not to be provided by every CMSIS-RTOS implementation.</p>
<p><b>Define and reference object definitions</b></p>
<p>With <b>#define osObjectsExternal</b> objects are defined as external symbols. This allows to create a consistent header file that is used throughout a project as shown below:</p>
<p><em>Header File</em> </p>
<div class="fragment"><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="cmsis__os_8h.html">cmsis_os.h</a>&gt;</span>                                         <span class="comment">// CMSIS RTOS header file</span></div>
<div class="line"></div>
<div class="line"><span class="comment">// Thread definition</span></div>
<div class="line"><span class="keyword">extern</span> <span class="keywordtype">void</span> thread_sample (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument);             <span class="comment">// function prototype</span></div>
<div class="line"><a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gaee93d929beb350f16e5cc7fa602e229f">osThreadDef</a> (thread_sample, <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa193b650117c209b4a203954542bcc3e6">osPriorityBelowNormal</a>, 1, 100);</div>
<div class="line"></div>
<div class="line"><span class="comment">// Pool definition</span></div>
<div class="line"><a class="code" href="group__CMSIS__RTOS__PoolMgmt.html#ga87b471d4fe2d5dbd0040708edd52771b">osPoolDef</a>(MyPool, 10, <span class="keywordtype">long</span>);</div>
</div><!-- fragment --><p>This header file defines all objects when included in a C/C++ source file. When <b>#define osObjectsExternal</b> is present before the header file, the objects are defined as external symbols. A single consistent header file can therefore be used throughout the whole project.</p>
<p><em>Example</em> </p>
<div class="fragment"><div class="line"><span class="preprocessor">#include &quot;osObjects.h&quot;</span>     <span class="comment">// Definition of the CMSIS-RTOS objects</span></div>
</div><!-- fragment --><div class="fragment"><div class="line"><span class="preprocessor">#define osObjectsExternal  // Objects will be defined as external symbols</span></div>
<div class="line"><span class="preprocessor">#include &quot;osObjects.h&quot;     // Reference to the CMSIS-RTOS objects</span></div>
</div><!-- fragment --><p><b>Header file cmsis_os.h</b></p>
<div class="fragment"><div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment"> * $Date:        5. February 2013</span></div>
<div class="line"><span class="comment"> * $Revision:    V1.02</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Project:      CMSIS-RTOS API</span></div>
<div class="line"><span class="comment"> * Title:        cmsis_os.h template header file</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Version 0.02</span></div>
<div class="line"><span class="comment"> *    Initial Proposal Phase</span></div>
<div class="line"><span class="comment"> * Version 0.03</span></div>
<div class="line"><span class="comment"> *    osKernelStart added, optional feature: main started as thread</span></div>
<div class="line"><span class="comment"> *    osSemaphores have standard behavior</span></div>
<div class="line"><span class="comment"> *    osTimerCreate does not start the timer, added osTimerStart</span></div>
<div class="line"><span class="comment"> *    osThreadPass is renamed to osThreadYield</span></div>
<div class="line"><span class="comment"> * Version 1.01</span></div>
<div class="line"><span class="comment"> *    Support for C++ interface</span></div>
<div class="line"><span class="comment"> *     - const attribute removed from the osXxxxDef_t typedef&#39;s</span></div>
<div class="line"><span class="comment"> *     - const attribute added to the osXxxxDef macros</span></div>
<div class="line"><span class="comment"> *    Added: osTimerDelete, osMutexDelete, osSemaphoreDelete</span></div>
<div class="line"><span class="comment"> *    Added: osKernelInitialize</span></div>
<div class="line"><span class="comment"> * Version 1.02</span></div>
<div class="line"><span class="comment"> *    Control functions for short timeouts in microsecond resolution:</span></div>
<div class="line"><span class="comment"> *    Added: osKernelSysTick, osKernelSysTickFrequency, osKernelSysTickMicroSec</span></div>
<div class="line"><span class="comment"> *    Removed: osSignalGet </span></div>
<div class="line"><span class="comment"> *----------------------------------------------------------------------------</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Copyright (c) 2013-2017 ARM LIMITED</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * SPDX-License-Identifier: Apache-2.0</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Licensed under the Apache License, Version 2.0 (the License); you may</span></div>
<div class="line"><span class="comment"> * not use this file except in compliance with the License.</span></div>
<div class="line"><span class="comment"> * You may obtain a copy of the License at</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><span class="comment"> * distributed under the License is distributed on an AS IS BASIS, WITHOUT</span></div>
<div class="line"><span class="comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><span class="comment"> * See the License for the specific language governing permissions and</span></div>
<div class="line"><span class="comment"> * limitations under the License.</span></div>
<div class="line"><span class="comment"> *---------------------------------------------------------------------------*/</span></div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#ifndef _CMSIS_OS_H</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define _CMSIS_OS_H</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osCMSIS identifies the CMSIS-RTOS API version.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osCMSIS           0x10002      </span><span class="comment">///&lt; API version (main [31:16] .sub [15:0])</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b osCMSIS_KERNEL identifies the underlying RTOS kernel and version number.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osCMSIS_KERNEL    0x10000          </span><span class="comment">///&lt; RTOS identification and version (main [31:16] .sub [15:0])</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osKernelSystemId shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osKernelSystemId &quot;KERNEL V1.00&quot;   </span><span class="comment">///&lt; RTOS identification string</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osFeature_xxx shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osFeature_MainThread   1       </span><span class="comment">///&lt; main thread      1=main can be thread, 0=not available</span></div>
<div class="line"><span class="comment"></span>#define osFeature_Pool         1       <span class="comment">///&lt; Memory Pools:    1=available, 0=not available</span></div>
<div class="line"><span class="comment"></span>#define osFeature_MailQ        1       <span class="comment">///&lt; Mail Queues:     1=available, 0=not available</span></div>
<div class="line"><span class="comment"></span>#define osFeature_MessageQ     1       <span class="comment">///&lt; Message Queues:  1=available, 0=not available</span></div>
<div class="line"><span class="comment"></span>#define osFeature_Signals      8       <span class="comment">///&lt; maximum number of Signal Flags available per thread</span></div>
<div class="line"><span class="comment"></span>#define osFeature_Semaphore    30      <span class="comment">///&lt; maximum count for \ref osSemaphoreCreate function</span></div>
<div class="line"><span class="comment"></span>#define osFeature_Wait         1       <span class="comment">///&lt; osWait function: 1=available, 0=not available</span></div>
<div class="line"><span class="comment"></span>#define osFeature_SysTick      1       <span class="comment">///&lt; osKernelSysTick functions: 1=available, 0=not available</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="preprocessor">#include &lt;stdint.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;stddef.h&gt;</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#ifdef  __cplusplus</span></div>
<div class="line"><span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span></div>
<div class="line">{</div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span> </div>
<div class="line"> </div>
<div class="line"><span class="comment">// ==== Enumeration, structures, defines ====</span></div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Priority used for thread control.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osPriority shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">enum</span>  {</div>
<div class="line">  <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa549e79a43ff4f8b2b31afb613f5caa81">osPriorityIdle</a>          = -3,          <span class="comment">///&lt; priority: idle (lowest)</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa61cb822239ac8f66dfbdc7291598a3d4">osPriorityLow</a>           = -2,          <span class="comment">///&lt; priority: low</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa193b650117c209b4a203954542bcc3e6">osPriorityBelowNormal</a>   = -1,          <span class="comment">///&lt; priority: below normal</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa45a2895ad30c79fb97de18cac7cc19f1">osPriorityNormal</a>        =  0,          <span class="comment">///&lt; priority: normal (default)</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa17b36cd9cd38652c2bc6d4803990674b">osPriorityAboveNormal</a>   = +1,          <span class="comment">///&lt; priority: above normal</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa914433934143a9ba767e59577c56e6c2">osPriorityHigh</a>          = +2,          <span class="comment">///&lt; priority: high</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aa1485dec3702434a1ec3cb74c7a17a4af">osPriorityRealtime</a>      = +3,          <span class="comment">///&lt; priority: realtime (highest)</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="cmsis__os_8h.html#ga7f2b42f1983b9107775ec2a1c69a849aae35f5e2f9c64ad346822521b643bdea4">osPriorityError</a>         =  0x84        <span class="comment">///&lt; system cannot determine priority or thread has illegal priority</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#ga7f2b42f1983b9107775ec2a1c69a849a">osPriority</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Timeout value.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osWaitForever shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osWaitForever     0xFFFFFFFF     </span><span class="comment">///&lt; wait forever timeout value</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">/// Status code values returned by CMSIS-RTOS functions.</span></div>
<div class="line"><span class="comment"></span><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osStatus shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">enum</span>  {</div>
<div class="line">  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ea9e1c9e2550bb4de8969a935acffc968f">osOK</a>                    =     0,       <span class="comment">///&lt; function completed; no error or event occurred.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ea5df7e9643aa8a2f5f3a6f6ec59758518">osEventSignal</a>           =  0x08,       <span class="comment">///&lt; function completed; signal event occurred.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ead604f3673359dd4ac643b16dc5a2c342">osEventMessage</a>          =  0x10,       <span class="comment">///&lt; function completed; message event occurred.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ea15b12e42b42b53f35fb8a2724ad02926">osEventMail</a>             =  0x20,       <span class="comment">///&lt; function completed; mail event occurred.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ea78f477732375c0e1fca814e369618177">osEventTimeout</a>          =  0x40,       <span class="comment">///&lt; function completed; timeout occurred.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99eac24adca6a5d072c9f01c32178ba0d109">osErrorParameter</a>        =  0x80,       <span class="comment">///&lt; parameter error: a mandatory parameter was missing or specified an incorrect object.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ea8fc5801e8b0482bdf22ad63a77f0155d">osErrorResource</a>         =  0x81,       <span class="comment">///&lt; resource not available: a specified resource was not available.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ea314d24a49003f09459035db0dd7c9467">osErrorTimeoutResource</a>  =  0xC1,       <span class="comment">///&lt; resource not available within given time: a specified resource was not available within the timeout period.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ea21635bdc492d3094fe83027fa4a30e2f">osErrorISR</a>              =  0x82,       <span class="comment">///&lt; not allowed in ISR context: the function cannot be called from interrupt service routines.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99eaf6552310a817452aedfcd453f2805d65">osErrorISRRecursive</a>     =  0x83,       <span class="comment">///&lt; function called multiple times from ISR with same object.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99eab7dda0ef504817659334cbfd650ae56f">osErrorPriority</a>         =  0x84,       <span class="comment">///&lt; system cannot determine priority or thread has illegal priority.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99eaf1fac0240218e51eb30a13da2f8aae81">osErrorNoMemory</a>         =  0x85,       <span class="comment">///&lt; system is out of memory: it was impossible to allocate or reserve memory for the operation.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ea4672c8a0c0f6bb1d7981da4602e8e9ee">osErrorValue</a>            =  0x86,       <span class="comment">///&lt; value of a parameter is out of range.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99ea5fde24ff588ec5ab9cb8314bade26fbc">osErrorOS</a>               =  0xFF,       <span class="comment">///&lt; unspecified RTOS error: run-time error but no other error message fits.</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99eac7a77f5fe18a15a357790c36a4aca1b1">os_status_reserved</a>      =  0x7FFFFFFF  <span class="comment">///&lt; prevent from enum down-size compiler optimization.</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Timer type value for the timer definition.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b os_timer_type shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">enum</span>  {</div>
<div class="line">  <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gadac860eb9e1b4b0619271e6595ed83d9ad21712f8df5f97069c82dc9eec37b951">osTimerOnce</a>             =     0,       <span class="comment">///&lt; one-shot timer</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gadac860eb9e1b4b0619271e6595ed83d9ab9c91f9699162edb09bb7c90c11c8788">osTimerPeriodic</a>         =     1        <span class="comment">///&lt; repeating timer</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gadac860eb9e1b4b0619271e6595ed83d9">os_timer_type</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Entry point of a thread.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b os_pthread shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> void (*<a class="code" href="cmsis__os_8h.html#aee631e5ea1b700fc35695cc7bc574cf7">os_pthread</a>) (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Entry point of a timer call back function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b os_ptimer shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> void (*<a class="code" href="cmsis__os_8h.html#aa2d85e49bde9f6951ff3545cd323f065">os_ptimer</a>) (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument);</div>
<div class="line"> </div>
<div class="line"><span class="comment">// &gt;&gt;&gt; the following data type definitions may shall adapted towards a specific RTOS</span></div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Thread ID identifies the thread (pointer to a thread control block).</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_thread_cb is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_thread_cb *<a class="code" href="cmsis__os_8h.html#adfeb153a84a81309e2d958268197617f">osThreadId</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Timer ID identifies the timer (pointer to a timer control block).</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_timer_cb is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_timer_cb *<a class="code" href="cmsis__os_8h.html#ab8530dd4273f1f5382187732e14fcaa7">osTimerId</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Mutex ID identifies the mutex (pointer to a mutex control block).</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_mutex_cb is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_mutex_cb *<a class="code" href="cmsis__os_8h.html#a3263c1ad9fd79b84f908d65e8da44ac2">osMutexId</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Semaphore ID identifies the semaphore (pointer to a semaphore control block).</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_semaphore_cb is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_semaphore_cb *<a class="code" href="cmsis__os_8h.html#aa8968896c84094aa973683c84fa06f84">osSemaphoreId</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Pool ID identifies the memory pool (pointer to a memory pool control block).</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_pool_cb is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_pool_cb *<a class="code" href="cmsis__os_8h.html#a08d2e20fd9bbd96220fe068d420f3686">osPoolId</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Message ID identifies the message queue (pointer to a message queue control block).</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_messageQ_cb is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_messageQ_cb *<a class="code" href="cmsis__os_8h.html#ad9ec70c32c6c521970636b521e12d17f">osMessageQId</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Mail ID identifies the mail queue (pointer to a mail queue control block).</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_mailQ_cb is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_mailQ_cb *<a class="code" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Thread Definition structure contains startup information of a thread.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_thread_def is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_thread_def  {</div>
<div class="line">  <a class="code" href="cmsis__os_8h.html#aee631e5ea1b700fc35695cc7bc574cf7">os_pthread</a>               pthread;    <span class="comment">///&lt; start address of thread function</span></div>
<div class="line"><span class="comment"></span>  <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#ga7f2b42f1983b9107775ec2a1c69a849a">osPriority</a>             tpriority;    <span class="comment">///&lt; initial thread priority</span></div>
<div class="line"><span class="comment"></span>  uint32_t               instances;    <span class="comment">///&lt; maximum number of instances of that thread function</span></div>
<div class="line"><span class="comment"></span>  uint32_t               stacksize;    <span class="comment">///&lt; stack size requirements in bytes; 0 is default stack size</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="cmsis__os_8h.html#structosThreadDef__t">osThreadDef_t</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Timer Definition structure contains timer parameters.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_timer_def is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_timer_def  {</div>
<div class="line">  <a class="code" href="cmsis__os_8h.html#aa2d85e49bde9f6951ff3545cd323f065">os_ptimer</a>                 ptimer;    <span class="comment">///&lt; start address of a timer function</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="cmsis__os_8h.html#structosTimerDef__t">osTimerDef_t</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Mutex Definition structure contains setup information for a mutex.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_mutex_def is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_mutex_def  {</div>
<div class="line">  uint32_t                   dummy;    <span class="comment">///&lt; dummy value.</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="cmsis__os_8h.html#structosMutexDef__t">osMutexDef_t</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Semaphore Definition structure contains setup information for a semaphore.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_semaphore_def is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_semaphore_def  {</div>
<div class="line">  uint32_t                   dummy;    <span class="comment">///&lt; dummy value.</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="cmsis__os_8h.html#structosSemaphoreDef__t">osSemaphoreDef_t</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Definition structure for memory block allocation.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_pool_def is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_pool_def  {</div>
<div class="line">  uint32_t                 pool_sz;    <span class="comment">///&lt; number of items (elements) in the pool</span></div>
<div class="line"><span class="comment"></span>  uint32_t                 item_sz;    <span class="comment">///&lt; size of an item</span></div>
<div class="line"><span class="comment"></span>  <span class="keywordtype">void</span>                       *pool;    <span class="comment">///&lt; pointer to memory for pool</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="cmsis__os_8h.html#structosPoolDef__t">osPoolDef_t</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Definition structure for message queue.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_messageQ_def is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_messageQ_def  {</div>
<div class="line">  uint32_t                queue_sz;    <span class="comment">///&lt; number of elements in the queue</span></div>
<div class="line"><span class="comment"></span>  uint32_t                 item_sz;    <span class="comment">///&lt; size of an item</span></div>
<div class="line"><span class="comment"></span>  <span class="keywordtype">void</span>                       *pool;    <span class="comment">///&lt; memory array for messages</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="cmsis__os_8h.html#structosMessageQDef__t">osMessageQDef_t</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Definition structure for mail queue.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: \b os_mailQ_def is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>os_mailQ_def  {</div>
<div class="line">  uint32_t                queue_sz;    <span class="comment">///&lt; number of elements in the queue</span></div>
<div class="line"><span class="comment"></span>  uint32_t                 item_sz;    <span class="comment">///&lt; size of an item</span></div>
<div class="line"><span class="comment"></span>  <span class="keywordtype">void</span>                       *pool;    <span class="comment">///&lt; memory array for mail</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="cmsis__os_8h.html#structosMailQDef__t">osMailQDef_t</a>;</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Event structure contains detailed information about an event.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b os_event shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment">///       However the struct may be extended at the end.</span></div>
<div class="line"><span class="comment"></span><span class="keyword">typedef</span> <span class="keyword">struct  </span>{</div>
<div class="line">  <a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a>                 status;     <span class="comment">///&lt; status code: event or error information</span></div>
<div class="line"><span class="comment"></span>  <span class="keyword">union  </span>{</div>
<div class="line">    uint32_t                    v;     <span class="comment">///&lt; message as 32-bit value</span></div>
<div class="line"><span class="comment"></span>    <span class="keywordtype">void</span>                       *p;     <span class="comment">///&lt; message or mail as void pointer</span></div>
<div class="line"><span class="comment"></span>    int32_t               signals;     <span class="comment">///&lt; signal flags</span></div>
<div class="line"><span class="comment"></span>  } value;                             <span class="comment">///&lt; event value</span></div>
<div class="line"><span class="comment"></span>  <span class="keyword">union  </span>{</div>
<div class="line">    osMailQId             mail_id;     <span class="comment">///&lt; mail id obtained by \ref osMailCreate</span></div>
<div class="line"><span class="comment"></span>    osMessageQId       message_id;     <span class="comment">///&lt; message id obtained by \ref osMessageCreate</span></div>
<div class="line"><span class="comment"></span>  } def;                               <span class="comment">///&lt; event definition</span></div>
<div class="line"><span class="comment"></span>} <a class="code" href="group__CMSIS__RTOS__Definitions.html#structosEvent">osEvent</a>;</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="comment">//  ==== Kernel Control Functions ====</span></div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Initialize the RTOS Kernel for creating objects.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osKernelInitialize shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__KernelCtrl.html#ga53d078a801022e202e8115c083ece68e">osKernelInitialize</a> (<span class="keywordtype">void</span>);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Start the RTOS Kernel.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osKernelStart shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__KernelCtrl.html#gaab668ffd2ea76bb0a77ab0ab385eaef2">osKernelStart</a> (<span class="keywordtype">void</span>);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Check if the RTOS kernel is already started.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osKernelRunning shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment">/// \return 0 RTOS is not started, 1 RTOS is started.</span></div>
<div class="line"><span class="comment"></span>int32_t <a class="code" href="group__CMSIS__RTOS__KernelCtrl.html#ga3b571de44cd3094c643247a7397f86b5">osKernelRunning</a>(<span class="keywordtype">void</span>);</div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#if (defined (osFeature_SysTick)  &amp;&amp;  (osFeature_SysTick != 0))     // System Timer available</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Get the RTOS kernel system timer counter </span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osKernelSysTick shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment">/// \return RTOS kernel system timer as 32-bit value </span></div>
<div class="line"><span class="comment"></span>uint32_t <a class="code" href="group__CMSIS__RTOS__KernelCtrl.html#gad0262e4688e95d1e9038afd9bcc16001">osKernelSysTick</a> (<span class="keywordtype">void</span>);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// The RTOS kernel system timer frequency in Hz</span></div>
<div class="line"><span class="comment">/// \note Reflects the system timer setting and is typically defined in a configuration file.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osKernelSysTickFrequency 100000000</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Convert a microseconds value to a RTOS kernel system timer value.</span></div>
<div class="line"><span class="comment">/// \param         microsec     time value in microseconds.</span></div>
<div class="line"><span class="comment">/// \return time value normalized to the \ref osKernelSysTickFrequency</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osKernelSysTickMicroSec(microsec) (((uint64_t)microsec * (osKernelSysTickFrequency)) / 1000000)</span></div>
<div class="line"><span class="preprocessor"></span> </div>
<div class="line"><span class="preprocessor">#endif    // System Timer available</span></div>
<div class="line"><span class="preprocessor"></span> </div>
<div class="line"><span class="comment">//  ==== Thread Management ====</span></div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Create a Thread Definition with function, priority, and stack requirements.</span></div>
<div class="line"><span class="comment">/// \param         name         name of the thread function.</span></div>
<div class="line"><span class="comment">/// \param         priority     initial priority of the thread function.</span></div>
<div class="line"><span class="comment">/// \param         instances    number of possible thread instances.</span></div>
<div class="line"><span class="comment">/// \param         stacksz      stack size (in bytes) requirements for the thread function.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameters to \b osThreadDef shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#if defined (osObjectsExternal)  // object is external</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osThreadDef(name, priority, instances, stacksz)  \</span></div>
<div class="line"><span class="preprocessor">extern const osThreadDef_t os_thread_def_##name</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#else                            // define the object</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osThreadDef(name, priority, instances, stacksz)  \</span></div>
<div class="line"><span class="preprocessor">const osThreadDef_t os_thread_def_##name = \</span></div>
<div class="line"><span class="preprocessor">{ (name), (priority), (instances), (stacksz)  }</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Access a Thread definition.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the thread definition object.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osThread shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osThread(name)  \</span></div>
<div class="line"><span class="preprocessor">&amp;os_thread_def_##name</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Create a thread and add it to Active Threads and set it to state READY.</span></div>
<div class="line"><span class="comment">/// \param[in]     thread_def    thread definition referenced with \ref osThread.</span></div>
<div class="line"><span class="comment">/// \param[in]     argument      pointer that is passed to the thread function as start argument.</span></div>
<div class="line"><span class="comment">/// \return thread ID for reference by other functions or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osThreadCreate shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>osThreadId <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gac59b5713cb083702dce759c73fd90dff">osThreadCreate</a> (<span class="keyword">const</span> <a class="code" href="cmsis__os_8h.html#structosThreadDef__t">osThreadDef_t</a> *thread_def, <span class="keywordtype">void</span> *argument);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Return the thread ID of the current running thread.</span></div>
<div class="line"><span class="comment">/// \return thread ID for reference by other functions or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osThreadGetId shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>osThreadId <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gab1df2a28925862ef8f9cf4e1c995c5a7">osThreadGetId</a> (<span class="keywordtype">void</span>);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Terminate execution of a thread and remove it from Active Threads.</span></div>
<div class="line"><span class="comment">/// \param[in]     thread_id   thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osThreadTerminate shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gaea135bb90eb853eff39e0800b91bbeab">osThreadTerminate</a> (osThreadId thread_id);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Pass control to next thread that is in state \b READY.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osThreadYield shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#gaf13a667493c5d629a90c13e113b99233">osThreadYield</a> (<span class="keywordtype">void</span>);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Change priority of an active thread.</span></div>
<div class="line"><span class="comment">/// \param[in]     thread_id     thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.</span></div>
<div class="line"><span class="comment">/// \param[in]     priority      new priority value for the thread function.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osThreadSetPriority shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#ga0dfb90ccf1f6e4b54b9251b12d1cbc8b">osThreadSetPriority</a> (osThreadId thread_id, <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#ga7f2b42f1983b9107775ec2a1c69a849a">osPriority</a> priority);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Get current priority of an active thread.</span></div>
<div class="line"><span class="comment">/// \param[in]     thread_id     thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.</span></div>
<div class="line"><span class="comment">/// \return current priority value of the thread function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osThreadGetPriority shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#ga7f2b42f1983b9107775ec2a1c69a849a">osPriority</a> <a class="code" href="group__CMSIS__RTOS__ThreadMgmt.html#ga4299d838978bc2aae5e4350754e6a4e9">osThreadGetPriority</a> (osThreadId thread_id);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="comment">//  ==== Generic Wait Functions ====</span></div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Wait for Timeout (Time Delay).</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue &quot;time delay&quot; value</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__Wait.html#ga02e19d5e723bfb06ba9324d625162255">osDelay</a> (uint32_t millisec);</div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#if (defined (osFeature_Wait)  &amp;&amp;  (osFeature_Wait != 0))     // Generic Wait available</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Wait for Signal, Message, Mail, or Timeout.</span></div>
<div class="line"><span class="comment">/// \param[in] millisec          \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out</span></div>
<div class="line"><span class="comment">/// \return event that contains signal, message, or mail information or error code.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osWait shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Definitions.html#structosEvent">osEvent</a> <a class="code" href="group__CMSIS__RTOS__Wait.html#ga8470c8aaedfde524a44e22e5b2328285">osWait</a> (uint32_t millisec);</div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#endif  // Generic Wait available</span></div>
<div class="line"><span class="preprocessor"></span> </div>
<div class="line"> </div>
<div class="line"><span class="comment">//  ==== Timer Management Functions ====</span><span class="comment"></span></div>
<div class="line"><span class="comment">/// Define a Timer object.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the timer object.</span></div>
<div class="line"><span class="comment">/// \param         function      name of the timer call back function.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osTimerDef shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#if defined (osObjectsExternal)  // object is external</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osTimerDef(name, function)  \</span></div>
<div class="line"><span class="preprocessor">extern const osTimerDef_t os_timer_def_##name</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#else                            // define the object</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osTimerDef(name, function)  \</span></div>
<div class="line"><span class="preprocessor">const osTimerDef_t os_timer_def_##name = \</span></div>
<div class="line"><span class="preprocessor">{ (function) }</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Access a Timer definition.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the timer object.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osTimer shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osTimer(name) \</span></div>
<div class="line"><span class="preprocessor">&amp;os_timer_def_##name</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Create a timer.</span></div>
<div class="line"><span class="comment">/// \param[in]     timer_def     timer object referenced with \ref osTimer.</span></div>
<div class="line"><span class="comment">/// \param[in]     type          osTimerOnce for one-shot or osTimerPeriodic for periodic behavior.</span></div>
<div class="line"><span class="comment">/// \param[in]     argument      argument to the timer call back function.</span></div>
<div class="line"><span class="comment">/// \return timer ID for reference by other functions or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osTimerCreate shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>osTimerId <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaedd312bfdca04e0b8162b666e09a1ae6">osTimerCreate</a> (<span class="keyword">const</span> <a class="code" href="cmsis__os_8h.html#structosTimerDef__t">osTimerDef_t</a> *timer_def, <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gadac860eb9e1b4b0619271e6595ed83d9">os_timer_type</a> type, <span class="keywordtype">void</span> *argument);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Start or restart a timer.</span></div>
<div class="line"><span class="comment">/// \param[in]     timer_id      timer ID obtained by \ref osTimerCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue &quot;time delay&quot; value of the timer.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osTimerStart shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#ga27a797a401b068e2644d1125f22a07ca">osTimerStart</a> (osTimerId timer_id, uint32_t millisec);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Stop the timer.</span></div>
<div class="line"><span class="comment">/// \param[in]     timer_id      timer ID obtained by \ref osTimerCreate.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osTimerStop shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#ga58f36b121a812936435cacc6e1e0e091">osTimerStop</a> (osTimerId timer_id);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Delete a timer that was created by \ref osTimerCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     timer_id      timer ID obtained by \ref osTimerCreate.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osTimerDelete shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#ga746b8043d906849bd65e3900fcb483cf">osTimerDelete</a> (osTimerId timer_id);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="comment">//  ==== Signal Management ====</span></div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Set the specified Signal Flags of an active thread.</span></div>
<div class="line"><span class="comment">/// \param[in]     thread_id     thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.</span></div>
<div class="line"><span class="comment">/// \param[in]     signals       specifies the signal flags of the thread that should be set.</span></div>
<div class="line"><span class="comment">/// \return previous signal flags of the specified thread or 0x80000000 in case of incorrect parameters.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osSignalSet shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>int32_t <a class="code" href="group__CMSIS__RTOS__SignalMgmt.html#ga3de2730654589d6c3559c4b9e2825553">osSignalSet</a> (osThreadId thread_id, int32_t signals);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Clear the specified Signal Flags of an active thread.</span></div>
<div class="line"><span class="comment">/// \param[in]     thread_id     thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.</span></div>
<div class="line"><span class="comment">/// \param[in]     signals       specifies the signal flags of the thread that shall be cleared.</span></div>
<div class="line"><span class="comment">/// \return previous signal flags of the specified thread or 0x80000000 in case of incorrect parameters or call from ISR.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osSignalClear shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>int32_t <a class="code" href="group__CMSIS__RTOS__SignalMgmt.html#ga87283a6ebc31ce9ed42baf3ea7e4eab6">osSignalClear</a> (osThreadId thread_id, int32_t signals);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Wait for one or more Signal Flags to become signaled for the current \b RUNNING thread.</span></div>
<div class="line"><span class="comment">/// \param[in]     signals       wait until all specified signal flags set or 0 for any single signal flag.</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.</span></div>
<div class="line"><span class="comment">/// \return event flag information or error code.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osSignalWait shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Definitions.html#structosEvent">osEvent</a> <a class="code" href="group__CMSIS__RTOS__SignalMgmt.html#ga38860acda96df47da6923348d96fc4c9">osSignalWait</a> (int32_t signals, uint32_t millisec);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="comment">//  ==== Mutex Management ====</span></div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Define a Mutex.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the mutex object.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osMutexDef shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#if defined (osObjectsExternal)  // object is external</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osMutexDef(name)  \</span></div>
<div class="line"><span class="preprocessor">extern const osMutexDef_t os_mutex_def_##name</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#else                            // define the object</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osMutexDef(name)  \</span></div>
<div class="line"><span class="preprocessor">const osMutexDef_t os_mutex_def_##name = { 0 }</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Access a Mutex definition.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the mutex object.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osMutex shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osMutex(name)  \</span></div>
<div class="line"><span class="preprocessor">&amp;os_mutex_def_##name</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Create and Initialize a Mutex object.</span></div>
<div class="line"><span class="comment">/// \param[in]     mutex_def     mutex definition referenced with \ref osMutex.</span></div>
<div class="line"><span class="comment">/// \return mutex ID for reference by other functions or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMutexCreate shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>osMutexId <a class="code" href="group__CMSIS__RTOS__MutexMgmt.html#ga5c9de56e717016e39e788064e9a291cc">osMutexCreate</a> (<span class="keyword">const</span> <a class="code" href="cmsis__os_8h.html#structosMutexDef__t">osMutexDef_t</a> *mutex_def);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Wait until a Mutex becomes available.</span></div>
<div class="line"><span class="comment">/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMutexWait shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__MutexMgmt.html#ga5e1752b73f573ee015dbd9ef1edaba13">osMutexWait</a> (osMutexId mutex_id, uint32_t millisec);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Release a Mutex that was obtained by \ref osMutexWait.</span></div>
<div class="line"><span class="comment">/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexCreate.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMutexRelease shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__MutexMgmt.html#ga006e4744d741e8e132c3d5bbc295afe1">osMutexRelease</a> (osMutexId mutex_id);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Delete a Mutex that was created by \ref osMutexCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexCreate.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMutexDelete shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__MutexMgmt.html#gac27e24135185d51d18f3dabc20910219">osMutexDelete</a> (osMutexId mutex_id);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="comment">//  ==== Semaphore Management Functions ====</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#if (defined (osFeature_Semaphore)  &amp;&amp;  (osFeature_Semaphore != 0))     // Semaphore available</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Define a Semaphore object.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the semaphore object.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osSemaphoreDef shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#if defined (osObjectsExternal)  // object is external</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osSemaphoreDef(name)  \</span></div>
<div class="line"><span class="preprocessor">extern const osSemaphoreDef_t os_semaphore_def_##name</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#else                            // define the object</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osSemaphoreDef(name)  \</span></div>
<div class="line"><span class="preprocessor">const osSemaphoreDef_t os_semaphore_def_##name = { 0 }</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Access a Semaphore definition.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the semaphore object.</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osSemaphore shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osSemaphore(name)  \</span></div>
<div class="line"><span class="preprocessor">&amp;os_semaphore_def_##name</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Create and Initialize a Semaphore object used for managing resources.</span></div>
<div class="line"><span class="comment">/// \param[in]     semaphore_def semaphore definition referenced with \ref osSemaphore.</span></div>
<div class="line"><span class="comment">/// \param[in]     count         number of available resources.</span></div>
<div class="line"><span class="comment">/// \return semaphore ID for reference by other functions or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osSemaphoreCreate shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>osSemaphoreId <a class="code" href="group__CMSIS__RTOS__SemaphoreMgmt.html#ga97381e8e55cd47cec390bf57c96d6edb">osSemaphoreCreate</a> (<span class="keyword">const</span> <a class="code" href="cmsis__os_8h.html#structosSemaphoreDef__t">osSemaphoreDef_t</a> *semaphore_def, int32_t count);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Wait until a Semaphore token becomes available.</span></div>
<div class="line"><span class="comment">/// \param[in]     semaphore_id  semaphore object referenced with \ref osSemaphoreCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.</span></div>
<div class="line"><span class="comment">/// \return number of available tokens, or -1 in case of incorrect parameters.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osSemaphoreWait shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>int32_t <a class="code" href="group__CMSIS__RTOS__SemaphoreMgmt.html#gacc15b0fc8ce1167fe43da33042e62098">osSemaphoreWait</a> (osSemaphoreId semaphore_id, uint32_t millisec);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Release a Semaphore token.</span></div>
<div class="line"><span class="comment">/// \param[in]     semaphore_id  semaphore object referenced with \ref osSemaphoreCreate.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osSemaphoreRelease shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__SemaphoreMgmt.html#gab108914997c49e14d8ff1ae0d1988ca0">osSemaphoreRelease</a> (osSemaphoreId semaphore_id);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Delete a Semaphore that was created by \ref osSemaphoreCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     semaphore_id  semaphore object referenced with \ref osSemaphoreCreate.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osSemaphoreDelete shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__SemaphoreMgmt.html#gabae2801ac2c096f6e8c69a264908f595">osSemaphoreDelete</a> (osSemaphoreId semaphore_id);</div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#endif     // Semaphore available</span></div>
<div class="line"><span class="preprocessor"></span> </div>
<div class="line"> </div>
<div class="line"><span class="comment">//  ==== Memory Pool Management Functions ====</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#if (defined (osFeature_Pool)  &amp;&amp;  (osFeature_Pool != 0))  // Memory Pool Management available</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// \brief Define a Memory Pool.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the memory pool.</span></div>
<div class="line"><span class="comment">/// \param         no            maximum number of blocks (objects) in the memory pool.</span></div>
<div class="line"><span class="comment">/// \param         type          data type of a single block (object).</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osPoolDef shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#if defined (osObjectsExternal)  // object is external</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osPoolDef(name, no, type)   \</span></div>
<div class="line"><span class="preprocessor">extern const osPoolDef_t os_pool_def_##name</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#else                            // define the object</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osPoolDef(name, no, type)   \</span></div>
<div class="line"><span class="preprocessor">const osPoolDef_t os_pool_def_##name = \</span></div>
<div class="line"><span class="preprocessor">{ (no), sizeof(type), NULL }</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// \brief Access a Memory Pool definition.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the memory pool</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osPool shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osPool(name) \</span></div>
<div class="line"><span class="preprocessor">&amp;os_pool_def_##name</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Create and Initialize a memory pool.</span></div>
<div class="line"><span class="comment">/// \param[in]     pool_def      memory pool definition referenced with \ref osPool.</span></div>
<div class="line"><span class="comment">/// \return memory pool ID for reference by other functions or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osPoolCreate shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>osPoolId <a class="code" href="group__CMSIS__RTOS__PoolMgmt.html#ga34af5c4f4ab38f4138ea7f1f9ece3a1a">osPoolCreate</a> (<span class="keyword">const</span> <a class="code" href="cmsis__os_8h.html#structosPoolDef__t">osPoolDef_t</a> *pool_def);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Allocate a memory block from a memory pool.</span></div>
<div class="line"><span class="comment">/// \param[in]     pool_id       memory pool ID obtain referenced with \ref osPoolCreate.</span></div>
<div class="line"><span class="comment">/// \return address of the allocated memory block or NULL in case of no memory available.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osPoolAlloc shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keywordtype">void</span> *<a class="code" href="group__CMSIS__RTOS__PoolMgmt.html#gaa0b2994f1a866c19e0d11e6e0d44f543">osPoolAlloc</a> (osPoolId pool_id);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Allocate a memory block from a memory pool and set memory block to zero.</span></div>
<div class="line"><span class="comment">/// \param[in]     pool_id       memory pool ID obtain referenced with \ref osPoolCreate.</span></div>
<div class="line"><span class="comment">/// \return address of the allocated memory block or NULL in case of no memory available.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osPoolCAlloc shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keywordtype">void</span> *<a class="code" href="group__CMSIS__RTOS__PoolMgmt.html#ga9f129fcad4730fbd1048ad4fa262f36a">osPoolCAlloc</a> (osPoolId pool_id);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Return an allocated memory block back to a specific memory pool.</span></div>
<div class="line"><span class="comment">/// \param[in]     pool_id       memory pool ID obtain referenced with \ref osPoolCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     block         address of the allocated memory block that is returned to the memory pool.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osPoolFree shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__PoolMgmt.html#ga4a861e9c469c9d0daf5721bf174f8e54">osPoolFree</a> (osPoolId pool_id, <span class="keywordtype">void</span> *block);</div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#endif   // Memory Pool Management available</span></div>
<div class="line"><span class="preprocessor"></span> </div>
<div class="line"> </div>
<div class="line"><span class="comment">//  ==== Message Queue Management Functions ====</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#if (defined (osFeature_MessageQ)  &amp;&amp;  (osFeature_MessageQ != 0))     // Message Queues available</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// \brief Create a Message Queue Definition.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the queue.</span></div>
<div class="line"><span class="comment">/// \param         queue_sz      maximum number of messages in the queue.</span></div>
<div class="line"><span class="comment">/// \param         type          data type of a single message element (for debugger).</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osMessageQDef shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#if defined (osObjectsExternal)  // object is external</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osMessageQDef(name, queue_sz, type)   \</span></div>
<div class="line"><span class="preprocessor">extern const osMessageQDef_t os_messageQ_def_##name</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#else                            // define the object</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osMessageQDef(name, queue_sz, type)   \</span></div>
<div class="line"><span class="preprocessor">const osMessageQDef_t os_messageQ_def_##name = \</span></div>
<div class="line"><span class="preprocessor">{ (queue_sz), sizeof (type)  }</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// \brief Access a Message Queue Definition.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the queue</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osMessageQ shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osMessageQ(name) \</span></div>
<div class="line"><span class="preprocessor">&amp;os_messageQ_def_##name</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Create and Initialize a Message Queue.</span></div>
<div class="line"><span class="comment">/// \param[in]     queue_def     queue definition referenced with \ref osMessageQ.</span></div>
<div class="line"><span class="comment">/// \param[in]     thread_id     thread ID (obtained by \ref osThreadCreate or \ref osThreadGetId) or NULL.</span></div>
<div class="line"><span class="comment">/// \return message queue ID for reference by other functions or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMessageCreate shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>osMessageQId <a class="code" href="group__CMSIS__RTOS__Message.html#gaf3b9345cf426304d46565152bc26fb78">osMessageCreate</a> (<span class="keyword">const</span> <a class="code" href="cmsis__os_8h.html#structosMessageQDef__t">osMessageQDef_t</a> *queue_def, osThreadId thread_id);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Put a Message to a Queue.</span></div>
<div class="line"><span class="comment">/// \param[in]     queue_id      message queue ID obtained with \ref osMessageCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     info          message information.</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMessagePut shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__Message.html#gac0dcf462fc92de8ffaba6cc004514a6d">osMessagePut</a> (osMessageQId queue_id, uint32_t info, uint32_t millisec);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Get a Message or Wait for a Message from a Queue.</span></div>
<div class="line"><span class="comment">/// \param[in]     queue_id      message queue ID obtained with \ref osMessageCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.</span></div>
<div class="line"><span class="comment">/// \return event information that includes status code.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMessageGet shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Definitions.html#structosEvent">osEvent</a> <a class="code" href="group__CMSIS__RTOS__Message.html#ga6c6892b8f2296cca6becd57ca2d7e1ae">osMessageGet</a> (osMessageQId queue_id, uint32_t millisec);</div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#endif     // Message Queues available</span></div>
<div class="line"><span class="preprocessor"></span> </div>
<div class="line"> </div>
<div class="line"><span class="comment">//  ==== Mail Queue Management Functions ====</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#if (defined (osFeature_MailQ)  &amp;&amp;  (osFeature_MailQ != 0))     // Mail Queues available</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// \brief Create a Mail Queue Definition.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the queue</span></div>
<div class="line"><span class="comment">/// \param         queue_sz      maximum number of messages in queue</span></div>
<div class="line"><span class="comment">/// \param         type          data type of a single message element</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osMailQDef shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#if defined (osObjectsExternal)  // object is external</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osMailQDef(name, queue_sz, type) \</span></div>
<div class="line"><span class="preprocessor">extern const osMailQDef_t os_mailQ_def_##name</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#else                            // define the object</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define osMailQDef(name, queue_sz, type) \</span></div>
<div class="line"><span class="preprocessor">const osMailQDef_t os_mailQ_def_##name =  \</span></div>
<div class="line"><span class="preprocessor">{ (queue_sz), sizeof (type) }</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// \brief Access a Mail Queue Definition.</span></div>
<div class="line"><span class="comment">/// \param         name          name of the queue</span></div>
<div class="line"><span class="comment">/// \note CAN BE CHANGED: The parameter to \b osMailQ shall be consistent but the</span></div>
<div class="line"><span class="comment">///       macro body is implementation specific in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="preprocessor">#define osMailQ(name)  \</span></div>
<div class="line"><span class="preprocessor">&amp;os_mailQ_def_##name</span></div>
<div class="line"><span class="preprocessor"></span> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Create and Initialize mail queue.</span></div>
<div class="line"><span class="comment">/// \param[in]     queue_def     reference to the mail queue definition obtain with \ref osMailQ</span></div>
<div class="line"><span class="comment">/// \param[in]     thread_id     thread ID (obtained by \ref osThreadCreate or \ref osThreadGetId) or NULL.</span></div>
<div class="line"><span class="comment">/// \return mail queue ID for reference by other functions or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMailCreate shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span>osMailQId <a class="code" href="group__CMSIS__RTOS__Mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a> (<span class="keyword">const</span> <a class="code" href="cmsis__os_8h.html#structosMailQDef__t">osMailQDef_t</a> *queue_def, osThreadId thread_id);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Allocate a memory block from a mail.</span></div>
<div class="line"><span class="comment">/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out</span></div>
<div class="line"><span class="comment">/// \return pointer to memory block that can be filled with mail or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMailAlloc shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keywordtype">void</span> *<a class="code" href="group__CMSIS__RTOS__Mail.html#gadf5ce811bd6a56e617e902a1db6c2194">osMailAlloc</a> (osMailQId queue_id, uint32_t millisec);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Allocate a memory block from a mail and set memory block to zero.</span></div>
<div class="line"><span class="comment">/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out</span></div>
<div class="line"><span class="comment">/// \return pointer to memory block that can be filled with mail or NULL in case of error.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMailCAlloc shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><span class="keywordtype">void</span> *<a class="code" href="group__CMSIS__RTOS__Mail.html#ga8fde74f6fe5b9e88f75cc5eb8f2124fd">osMailCAlloc</a> (osMailQId queue_id, uint32_t millisec);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Put a mail to a queue.</span></div>
<div class="line"><span class="comment">/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     mail          memory block previously allocated with \ref osMailAlloc or \ref osMailCAlloc.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMailPut shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__Mail.html#ga485ef6f81854ebda8ffbce4832181e02">osMailPut</a> (osMailQId queue_id, <span class="keywordtype">void</span> *mail);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Get a mail from a queue.</span></div>
<div class="line"><span class="comment">/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out</span></div>
<div class="line"><span class="comment">/// \return event that contains mail information or error code.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMailGet shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Definitions.html#structosEvent">osEvent</a> <a class="code" href="group__CMSIS__RTOS__Mail.html#gac6ad7e6e7d6c4a80e60da22c57a42ccd">osMailGet</a> (osMailQId queue_id, uint32_t millisec);</div>
<div class="line"> <span class="comment"></span></div>
<div class="line"><span class="comment">/// Free a memory block from a mail.</span></div>
<div class="line"><span class="comment">/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.</span></div>
<div class="line"><span class="comment">/// \param[in]     mail          pointer to the memory block that was obtained with \ref osMailGet.</span></div>
<div class="line"><span class="comment">/// \return status code that indicates the execution status of the function.</span></div>
<div class="line"><span class="comment">/// \note MUST REMAIN UNCHANGED: \b osMailFree shall be consistent in every CMSIS-RTOS.</span></div>
<div class="line"><span class="comment"></span><a class="code" href="group__CMSIS__RTOS__Status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> <a class="code" href="group__CMSIS__RTOS__Mail.html#ga27c1060cf21393f96b4fd1ed1c0167cc">osMailFree</a> (osMailQId queue_id, <span class="keywordtype">void</span> *mail);</div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#endif  // Mail Queues available</span></div>
<div class="line"><span class="preprocessor"></span> </div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#ifdef  __cplusplus</span></div>
<div class="line"><span class="preprocessor"></span>}</div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span> </div>
<div class="line"><span class="preprocessor">#endif  // _CMSIS_OS_H</span></div>
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